Engineering Fundamentals: An Introduction to Engineering, 4th ed.c

Problems 457

Problem 14.18

where

WCIwindchill index (kcal /m

2

h)

Vwind speed ( m/s)

Taambient air temperature (C)

and the value 33 is the body surface temperature in

degrees Celsius.

The more common equivalent windchill tempera-

tureTequivalent(C) is given by

WCI 1 10.45V 102 V 2133 Ta 2

Note thatVis expressed in km/h.

Create a table that shows the windchill temperatures

for the range of ambient air temperature

 30 CTa 10 C and wind speed of 20 km/h

V80 km/h as shown in the accompanying spread-

sheet.

14.20.Use the data given in Figure 14.10 and duplicate the

chart shown there.

1 Ta 332  33

Tequivalent0.045 1 5.27V

0.5

10.450.28V 2

Problem 14.19

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